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3 years ago

I need help with one chem problem! PLEASEEEE

Chemistry

1 answer:

lapo4ka [179]3 years ago

7 0

Molecular mass of Carbon in compound = 29.784% * 241.94 g/mol
= 72.05 g/mol

Number of moles = 72.05 / 12 = 6 [ Molar mass of Carbon = 12 ]

Now, Molecular mass of Hydrogen in compound = 4.166% * 241.94 g/mol
= 10.07 g/mol

Number of moles = 10.07 / 1 = 10 [ Molar mass of Hydrogen = 1 ]

Now, Molecular mass of Bromine in compound = 66.05% * 241.94 g/mol
= 159.80

Number of moles = 159.80 / 79.90 = 2

Empirical Formula = C₆H₁₀Br₂

Hope this helps!

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ollegr [7]

Answer:

33.6 L

Explanation:

From the question given above, the following data were obtained from:

Initial volume (V1) = 8.40 L L

Initial pressure (P1) = P

Initial temperature (T1) = T

Final pressure (P2) = one-half the original pressure = ½P

Final temperature (T2) = double the original temperature = 2T

Final volume (V2) =.?

Thus, the new volume of the gas can be obtained as follow:

P1V1/ T1 = P2V2 /T2

P × 8.40 / T = ½P × V2 /2T

P × 8.40 / T = P × V2 / 4T

Cross multiply

T × P × V2 = P × 8.40 × 4T

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Thus, the new volume of the gas is 33.6 L

7 0

3 years ago

7 points

Free_Kalibri [48]

Answer: 12 ( answer not among the option)

Explanation:

From the equation of reaction; P4O10+ H2O -----> H3PO4, it is unbalanced.

One can only get the exact number of ''Hydrogen atom'' if it is well balanced.

Adding '4' to H3PO4 on the RHS and '6' to H2O on LHS of the equation would give a balanced equation such as;

P4O10 + 6H2O -----> 4 H3PO4

Therefore the number of hydrogen atoms found on the reactant is 12.

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3 years ago

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lidiya [134]

Answer:

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Explanation:

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3 0

2 years ago

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kolbaska11 [484]

Answer:

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